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398
Analog Output Units
Section 7-3
Allocation of Output
Words
Four output words are allocated, beginning from the first word following the
last I/O word allocated to the CPU Unit or already-connected Expansion I/O
Unit or Expansion Unit.
Writing the Range Code
Write the output use and the range code to words n+1 and n+2. The D/A con-
version will start when the set data is transferred from the CPU Unit to the
Analog Output Unit.
■
Range Code
• The Analog Input Unit will not start converting analog I/O values until the
range code has been written. The output will be 0 V or 0 mA.
• From when the range code has been written until data in the analog out-
put convertible range is written, 0 V or 0 mA will be output in the 0 to 10 V,
-10 to +10 V, and 0 to 20 mA ranges, and 1 V or 4 mA will be output in the
1 to 5 V and 4 to 20 mA ranges.
• Once the range code has been set, it is not possible to change the setting
while power is being supplied to the CPU Unit. To change the I/O range,
turn the CPU Unit OFF then ON again.
3. Ladder Program
Words n+1 to n+4
Analog Output Unit
15 0
1 0 0
0
0
0
0
8
7
6
5
4
3
2
1
Wd n+1
15 0
1 0 0
0
0
0
0
8
7
6
5
4
3
2
1
0
0
Analog input 2
Analog input 1
Analog input 4
Analog input 3
Set to 1.
Set to 1.
Wd n+2
0
1
Range code
Analog input signal range
−
10 to 10 V
0 to 10 V
1 to 5 V
0 to 20 mA
4 to 25 mA
000
001
010
011
100
Output use
No
Yes
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...